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<a href="https://luajit.org"><span>Lua<span id="logo">JIT</span></span></a>
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<h1>Status</h1>
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<a href="luajit.html">LuaJIT</a>
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<a href="https://luajit.org/download.html">Download <span class="ext">&raquo;</span></a>
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<p>
This documentation is for LuaJIT 2.1.0-beta3. Please check the <tt>doc</tt>
directory in each git branch for the version-specific documentation.
</p>
<p>
The currently developed branches are LuaJIT&nbsp;2.1 and LuaJIT&nbsp;2.0.
</p>
<p>
LuaJIT&nbsp;2.0 is in feature-freeze &mdash; new features will only
be added to LuaJIT&nbsp;2.1.
</p>

<h2>Current Status</h2>
<p>
LuaJIT ought to run all Lua&nbsp;5.1-compatible source code just fine.
It's considered a serious bug if the VM crashes or produces unexpected
results &mdash; please report this.
</p>
<p>
Known incompatibilities and issues in LuaJIT&nbsp;2.0:
</p>
<ul>
<li>
There are some differences in <b>implementation-defined</b> behavior.
These either have a good reason, are arbitrary design choices
or are due to quirks in the VM. The latter cases may get fixed if a
demonstrable need is shown.
</li>
<li>
The Lua <b>debug API</b> is missing a couple of features (return
hooks for non-Lua functions) and shows slightly different behavior
in LuaJIT (no per-coroutine hooks, no tail call counting).
</li>
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